Joshua 13:15

“And Moses gave unto the tribe of the children of Reuben [inheritance] according to their families.] According to the number of them, and sufficient for them.”

“The writer appends to the command of God Joshua 13:1-7 a statement that the other two tribes and a half had already had their inheritance marked out for them by Moses in the land east of Jordan. The boundaries of this territory as a whole are first set forth Joshua 13:8-14, and afterward the portions assigned within it to the two tribes and a half are severally described Joshua 13:15-33. Joshua 13:14 See Deuteronomy 18:1-5 and notes. Joshua 13:15-24 Inheritance of the tribe of Reuben. This territory was the most southerly of the trans-Jordanic possessions of Israel, and adjoined Moab, which lay only on the other side of the Arnon. Hence, the Reubenites became in after times much intermixed…”

“According to their families - Dividing the inheritance into as many parts as they had families; but this is only spoken of the greater families; for the lesser distributions to the several small families was done by inferior officers, according to the rules which Moses gave them. Joshua 13:19”

“13:15-23 Because Reuben, Jacob’s firstborn son by Leah (Gen 29:32), forfeited his birthright by sleeping with his father’s concubine (Gen 35:22), the inheritance of his tribe was not of central importance. Although the tribe received a fertile portion of land, it was difficult to defend from neighboring nations. The tribe of Reuben eventually lost the southern portion to Moab.”

“The Possessions of the Two Tribes and a Half. - Jos 13:15-23. The tribe of Reuben received its inheritance in the south-namely, the territory from Aror in the Arnon valley, and from Ar in that valley, onwards, and the plain (table-land) by Medeba (see Jos 13:9), with Heshbon the capital and her towns, i.e., the towns dependent upon it, in the plain. Heshbon, almost in the centre between the Arnon and the Jabbok, was situated upon the border of the inheritance of the Reubenites, and was ceded to the Gadites, who gave it up to the Levites ( Jos 21:39; Ch1 6:66 : see at Num 32:37). Dibon, called Dibon of Gad in Num 33:45, because the Gadites had built, i.e., fortified it, was on the south of…”